Toothbrush



E. DOLL TOOTHBRUSH June 18, 1935.

Filed Feb. 23, 1934 Inventor Patented June 18, 1935 UNITED STATES PATENT OFFICE 4 Claims.

This invention relates to improvements 'in toothbrushes and more particularly to improvements over those types of toothbrushes forming the subject matter of Patent No. 1,874,467 granted to me under date of August 30, 1932.

An object of the present invention is to simplify the manner and means for detachably connecting the bristles or head with the handle of the brush, and the invention together with its numerous objects and advantages will be best understood from a study of the following description taken in connection with the accompanying drawing wherein: v

Figure 1 is a fragmentary sectional elevational view of a preferred form of the invention.

Figure 2 is a fragmentary sectionalview of,

V the handle of the invention of Fig. 1.

Figure 3 is a side elevational view of the head to be used with the handle shown in Figure 2.

Referring to the drawing by reference nu merals it will be seen that in each form of the invention the handle includes a shank portion I which is longitudinally tapered and is of relatively small diameter. At its largest end the shank I is integral with a grip portion (not shown) while at its smallest end the shank portion I is integral with a substantially flat disk like head section 3.

In the form of the invention shown the disk like body 3 of the handle is provided with a tapered socket 15 the wall of which at the inner face of the body 3 is extended beyond said face of the body 3 and externally threaded as at Hi. In this form of the-invention the body handle of the brush, and as will be clear from a study of Figure 1.

5 of the head 4 is provided with a frustro-coni I5 is -Having thus describedmy invention and the numerous embodiments thereof, what is claimed asnewisti, I

l. A toothbrush including a handle having a disk integral with. one end thereof, said" disk 5 being provided with atapered socket having' the wall thereof projecting beyondone face of the disk and externally threaded, and a head for the brush including a disklike bristle carrying body'having-an integral tapered pin fitting 10 said socket and athreaded recess circumjacent the pin at the basethereof threadedly receiving the threaded wall extension of said socket.

2. A toothbrush including a handle, a head connected with one end of the handle, said head being provided with a socket, the wall of which is extended beyond one face of said head and externally threaded, and a head for the brush in- 'cluding a bristle carryingbody having a cou- 3. A toothbrush comprising a handle having a disk integral with one end thereof, said disk being provided with a socket having the wall thereof extending beyond one face of the disk and externally threaded, and a head for the brush including a bristle carrying body provided with an internally threaded recess adapted to screw threadedly receive the extended wall portion of said'socket. 1

4.111 a toothbrush, the combination with a handle having a shank tapering toward one end,

and at its smallest end merging into a body havingan externally-threaded disc-like projection, and a head including a body, and bristles secured to the body, said body having an internally-threaded bore securing the body of thehead and the externally-threaded projection of said handle together.

EMIL noLL, 

